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Neles Series PZ Capping Valve
Brand: ValmetMetso capping valves provide for automatic opening and closing of batch digesters for chip fill.
Complete accessories for computer control are furnished in the assembly.
Over 2,000 units are in use at pulp mills around the world.
Specifications
Brand
Actuator Type
- Double-Acting
- Electric
- Hydraulic
- Piston
- Pneumatic
Applications
- Pulp Mills
Approvals & Certifications
- EN 10204 3.1 Material Certificate
Ball Material
- 316 Stainless Steel - ASTM A351 CF8M, 1.4408
- Cast Stainless Steel - CG8M
- Hard Chrome
- Rubber - Hcr
Bearing Material
- Alloy 218 (UNS S21800)
- Hard Chromed PTFE
Bonnet Material
- 316 Stainless Steel - ASTM A351 CF8M, 1.4408
Bushing Material
- Bearing: AISI 316 Stainless Steel
- Bearing: Alloy 218 (Nitronic 60, UNS S21800)
- Bearing: PTFE
- Bearing: Rubber (Hcr)
Cover Material
- Protection Cover: AISI 304 Stainless Steel
Enclosure, Body Material
- (Upper, Lower) Part, 316 Stainless Steel - ASTM A351 CF8M, 1.4408
- Cast Stainless Steel (CG8M)
Flange Size - 20” (DN 500)
- 20" (DN 500) - 150# ANSI
- 20" (DN 500) - PN 16
Flange Size - 24” (DN 600)
- 24" (DN 600) - 150# ANSI
- 24" (DN 600) - PN 16
Flange Size - 30” (DN 750)
- 30" (DN 750) - 150# ANSI
- 30" (DN 750) - PN 16
Gasket Material
- Spiral: AISI 316 Stainless Steel
- Spiral: PTFE
Gland Material
- 316 Stainless Steel - ASTM A351 CF8M, 1.4408
Materials of Construction
- Bearing Strip, Sealing Cord, Seal Strip: PTFE
- Console, Bearing Strip: Steel (EN 10025 to S355J2 G3)
- Key: Stainless Steel (UNS S31803)
- Stud, Adjusting Plate Kit, Supporter, Real Tilting Device, Retaining Plate: 316 Stainless Steel (ASTM A193 Grade B8M, ASTM A351 Grade CF8M)
- Stud: AISI 329 Stainless Steel
- Washer: Carbon Steel
- Washer: Zinc
Name Plate, Tag Material
- AISI 304 Stainless Steel
Nut & Bolt Material
- Hexagon Nut Heavy: 316 Stainless Steel (ASTM A194 Grade 8M, ISO 3506 A4-70/80)
- Hexagon Nut: Zinc
- Lifting Eye Bolt, Hexagon Nut: Carbon Steel (ASTM A576 Grade 1015)
Port
- Full
Proof Pressure
- Test - psi: 435.1 (kPa: 3,000, bar: 30) or 1.5 x Nominal Pressure
Ring Material
- Bearing: AISI 329 Stainless Steel
- Packing, Support: PTFE
- Support: Steel (C25)
Screw Material
- Hexagon: Stainless Steel (ISO 3506 A4-80)
Seat / Seal Material
- Ball Seat: 317 Stainless Steel
- Ball Seat: AISI 316 Stainless Steel
- Ball Seat: Cobalt-based Alloy 50 Nb
Spring Material
- Disc: Steel (EN 10083 to 1.8159)
UNF/UNC Connection
- 1" UNC
- 3/4" UNC
- 7/8" UNC
- Pulp Mills
